Electricity will enter the home either via overhead wires or through an underground cable. The wires or cable will first connect to a either a main fuse and then meter board usually mounted outside the house (so the electricity providers can observe how much electricity is being used and charge the user accordingly) or in some countries directly to the main board and then on to a distribution board where the electricity is supplied to circuits throughout the house to which fittings and appliances are either permanently connected to or are able to be connected to via a socket and plug system.